From c2d3ee0f28fabdb0f5fdd0fabe6d7464cc3b27d8 Mon Sep 17 00:00:00 2001
From: Kelvin Sherlock <ksherlock@gmail.com>
Date: Sat, 15 Jan 2022 16:36:28 -0500
Subject: [PATCH] show all SGR (inverse, bold, underscore, blink) as inverted.

---
 vt100.csi.S | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/vt100.csi.S b/vt100.csi.S
index f2121d6..e0a8649 100644
--- a/vt100.csi.S
+++ b/vt100.csi.S
@@ -473,8 +473,11 @@ csi_m
 	blt :loop
 
 * now update - bit 7 indicates inverse.
+	stz draw_inverse
 	lda SGR
-	and #$80
+	beq :rts
+	lda #$80
+*	and #$80
 	sta draw_inverse
 
 :rts	rts